| Title | Application of ordered micro-mesoporous carbon materials activated by steam and CO2 or KOH in solid-phase extraction of selected phthalates from aqueous samples |
|---|---|
| ID_Doc | 64910 |
| Authors | Widel, D; Jedynak, K; Witkiewicz, Z |
| Title | Application of ordered micro-mesoporous carbon materials activated by steam and CO2 or KOH in solid-phase extraction of selected phthalates from aqueous samples |
| Year | 2021 |
| Published | |
| Abstract | Adsorption of six phthalate acid esters (PAEs) from aqueous samples by the solid-phase extraction (SPE) method was studied. As sorbents in the SPE method, two ordered micro-mesoporous carbon materials were used, obtained by the soft-templating method (STA) and activated by steam and carbon dioxide (STA-CO2) or potassium hydroxide (STA-KOH). The surface properties of investigated carbon materials were characterized by nitrogen adsorption isotherms and the scanning electron microscopy. Studied adsorbents have specific surface areas of 1,008 and 1,009 m(2) g(-)(1)for STA-CO2 and STA-KOH, respectively. The recoveries obtained for six PAEs (DMP, DEP, DBP, BBP, DEHP, and DOP) in the SPE procedure with application of studied carbon materials as sorbents were in the range of 92%-99% for STA-CO2 and 89%-98% for STA-KOH. The multiple SPE procedure without exchanging the carbon sorbents in SPE cartridge were also studied, obtaining recoveries for determined PAEs up to 90%. The determination of PAEs in extracts was performed by the gas chromatography-mass spectrometry (GC-MS) method. Applied to SPE method carbon materials were also compared to commercially available sorbents as C-18 and Florisil. |
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